Grommet-fastened metallic gripper



Dec. 6, 1932. c. cHEsLER- 1,890,363

v G ROMMET FASTENED METALLIC GRIPPER Filed Feb. 24, 1930 'CQJW/ Quinn/j @nl @uw @uw Patented Dec. k6, 1,932 i UNITED "STATES Veinem CHE- sr;

' Haicom-mmm .Q inventio relates". to iiew y.smid useful inrprevermentss` in '.grominet stened rrietellicV grippers fwhichshall comprise integral metal portiohsclesignedtobeberitfthe one about Q thevotlfier,A anni 'ech of 'said'rmetelrp'ortons haQving. spaced [apertures therein,.t in alinement both before the'bendiiig operation arid .l afterl they are-'so lient, the; apertures oflone of said metal lportionsbeing in registration,

lo] after Athe bending operation, with the apertures of the other portion,respectively,l someI means being employecl-togrip together thev two metal portionsvvhich will ordinarily loev metal plates comprising an elongated metal l? strip integral in all positions ofsaid. portionsl 1 AV common structure heretofore employed for reinforcing: eyelets jin canvas or similar material hascomlprisel. common gromiiletsk which areattaghed to the canvas singly, and' which structiirer has presented great difficulty d ue tothe canvas-.having iitsl-several-eyelets reinforced bysixigle grommets,eaeh of which Will-` ordinarilyibear A itslovvn streinjA separaterly, and which would be expecteltovtear out e2251I ofthe opening in the .goods successivelyflno n one `olf-the grommets,serviiiggtofassist the others carrying the load or strain designedobeepplie t0 the-.given-@nvsf f '-1 t A. later improvement ivresA invente@ bylthi-s Q9(- pplen which-in genewlgiwas designed :tot 7 applyy plates tolbfoth surfaces of l the material i" with their spiced `apertures in registration whenyapplied, enel (the 4gromlriets piercing the l textile material; ariel securingl the two plates'j together and thus applyingthe strain-0f' alla the eyelets gcombiiiatio, which has been found desirable.- flglhis jrst improvement is disclosed 'in gener-'allie my Aapplication for; metallic? `grippers lil'eol J-agilmfryV 245. 1930, Aam QSer-iel No .423,162. l Sincethelliirlg,T

,Ig heveurther improved thestructure of@ the reiniorced .eyelets -for bearing great strainVA applied; to canvas: and other textiles, aby 4not; lionly making each,ofthe-platesf-above :mdf belowlthe textile, integral `and positioning the severaliapertres 'in spaced relation on these plates,; but I have further discovered that a further valli able advance infthis artf can fread 5.9 iilyA bettainedvby; `forming theV two pilates` En, 'or cLEvELAND HErefrr's, omo, ssfroon refrn merxitioonirrgi plate as one form of my gripper-opmars 'of ythe `ebove efiplieatioli,iHY

COMBANY, or CLEVELAND; omo, lA celeron-Amok olf 01110 1 'A 'l Sie; were@ turesrthereirilin spacedfrelationgahdobnfd, i 4` 111g the.` integral eboiitfitself, fte, x Y the Lepertures in one yportion eil/1,V registry th: il thoseintheother., Y Y u l- The .bandi-11g @eration 0f the metallic strip :upon itselfgzmd .abouttholodge-* of the canvas, .servestoholfl-,the registeredinl addition to providing fogjfurthercstreggth, L f Y pose .gmay comprise l an plurality :of i{iper-t i1-resiV Gea; i

in leee-l1 `Irnetellie portion ofthe plltgirthet the integral strip may haveblli oncfaperturei atelther end, so that after-the at1ox14,"there Will 4he but one strengthened eyelet l blut. 5a single integralplete in 4myemitenu 'mi l .4th ithese and other objects iii viewpmyf lmprovedeonstruction 4outlined as my'PDss-f.

entr-invention consists in,- the structure (le-v;

11itheappeiuleleleimsend illustratediii o ,755

accompanyi-rig-drawing whielg-g- '1 l 'l lili-giurie;` q1 l rs plen, vielw-offtanullongatd fore itsfapplieationfto flexible, material; T1 Y;

vzie'w,` suchysection bei 2.52 of Eiger; -i 1li-ignite 3 isla, ^`pien vie infFjg; i imiter "Having beeiiA applied t ribed'inthe following speeificatiom:reci-tedL y l 5 line 10-10 of said view.

Y Referring nowlespeciall'y"tov Figs. 1 'to 4,

` an integral metallicvplate' has a plurality of gripper structures 6 formed integral theref withv and punched out from' the plate, Vthese K l grippers being apertu'red fand voutwardly, v. flanged from the latterto form annular'seats therein, all said annular, seats projectingfrom said plate inVV one direction and forming apertures 7 therein, and other gripper struc-I 515 turesv8 integral with the lplate and punchedl outtheiefrom in a direction opposite to the structures 16 'and forming'tubular or' sleeve' membersfinsaid plate. Itis tobe noted in l Figs: 1-and2 that the three'g'ripper structures 206 as well as the tubes 8 are allspaced apart and-fl-all in alinement, the-threeltubes 8 being y frmed in one end ofthe plate 'and the out` "wardly"stamped grippers 6 inthe opposite end- :It is the purpose ofv this oppositely ar- 2? vrangedstructureftomake possible the bending-'of the'porti'on'9 of the Aplate having the tubes8'downwa'rdly, as shown in Figs. 1 and 2,1-ab'ut'the edge ofl the canvas or other flex-l ible Ymaterial to which the lgripper device/is to-bei'applied'," until 'such portion 9 will take s the-position directly beneath the 'portion 10 n 4of the plate', butl on the opposite side ofl ,the

" canvas,`fas shown inFig. 3.'y n y As the platey 5 is bent about the canvas, the i x grommet tubes 8 willpass throughu the material, 4eitherlthrough openings cut thereinby Vsaidl tubes during the bending operation of said plate 5, or through preformed openings inthefcanvas. The tubes 8 willf then be Vinr- Vser-ted in' theY base ofvthepunched1out-struc# l turesr and thenceV passed throughfthe openv v Vings-'lof the'apertured'grippersfwith'whichV they register. 1

encircling flanges 12 which engagethe out wardv portions ofthe grippers 6 and press the` opposite Vmembersv Grandi-.8 together permai ,t nently i upon ,the .canvasftlliereby;V very tightly grippingthe canvas betweenvthe two plate portions 9 Y and 10Q, yandthusv forming as many 'eyelq'etsl as theregare gripper structure z6', and theentiremetal structure being'integral. A

Y In the structure'shown in Figs. Zand 4 and v 5 above described, it will be seen that in forming the tubes 8 integral with the plate portion 9, the annular portions '130i metal areV firstrv pressedupward to about the 'sameheight that Afterfthe members 8 have been inserted rin p 5' thegrippers 6,.which members 8-ext`end somet what abovetheimembers 6,- because of the .greater relative length of the 'sleeves'SVthe materialll andthe bent plate are then poslt Ationedin a suitable-press andthe necksof the 50V' members 8 areloverturned orlupset to produce is directed downward, and is slightly 'smallerv in diameter than the opening 7 of the member 6. This permits the ready entranceL of the tubes 8 into the openings 7. In such structure, the grommet tubes v8 are integral with the plate portion 9,'but the plate portions 9 'and 10' are also integral with each other. :Whilethe structure disclosed ent invention has Vthe integral bent portions Vof the plate, one of said portions having integral vgrommetitubes, I have also shown in Figs. 5, 6, 7, 9 and 10, annularstructures "15 punched:'outitromthe plate forming the apertures 16, and theA securing grommets 17 soW formed 'of separate metal, as shown in Fig; v

8 for insertion inthe a'pertures16,`after the f plate ll'is vbent about the edge @of the canvas. l

'This modified lformV of the invention while'lj permitting the' duplicate gripper'members 15 to `be integral with thefplatey 14,will' require separate grommets 17 whichare-inserted aft-V erthe bending operation ofthe metal, and the Y smaller end 18 of the'part 17 to be overturned' or upset to produce annular flanges 19Hl which will engage the annular'structures` 15, and j thereby press the'two-portions of the'plate 14 together and grip the canvas between such portions veryV tightlyfasfin thel structurey Itis evident that by'the'use of 'the lowerl v metal plate integral with an'up'per metal portion, the combined strengthfmy integral but bent gripper structure will bev greatly enf hanced,`and` that ythe integral'structure serves f Y the furthervaluable function 1'of' holding the punched-outy flanges in registry, and thus.l

make the desired position bers more positive.y

the plate'.4v l

v Having' thus of the UnitedStates, is: 'l

V1. 'An eyeleting devicecempri'sing an elon-V gated metal plate'which may bebent upon a cross line thereof to formportionsfor engagf Y ing opposite' facesof apiece of material, one v portionhaving annular upturn'edV and apertured gripper members struckdupzfrom the 'Vv-,described inyfinveneawhat I claim and desire to secure'by Letters Patentl metal, and` yanotherl portionl havingf tubular:

. neck members integral withthe plate,='spaced' apart and all extending in parallelismfinfthe `same,Y direction but opposite toY that"y of said gripper members, all of said gripper members" and neck membersbeing in 'alinemenn 2.Y An eyeleting device comprising a' metallic plate havingaltubular neck portion in'- tegral therewith and pressed outwardly at an '156 y angle to the plate for engaging a piece of ilexible material, and an annular upturned gripper member having an aperture therethrough and spaced from the neck portion, vthe said neck portion being directed from the plate oppositely to the said upturned member while the plate is in a common plane, so that when the metallic plate is bent over the edge of said flexible material in a direction -to move the neck portion toward the annular gripper ,member and the portions of the plate are pressed together with the flexible material between said portions of the plate, the neck portion will be forced in` and through the apertured gripper member and extend beyond the latterto permit upsetting the neck portion to engage the gripper.

3. An eyeleting device comprising an elongated plate formed of flexible metal having tubular neck portions integral with the plate, spaced apart and all extending in the same direction in parallelism, and annular upturned and apertured gripper members in another portion of said plate and oppositely directed from said neck portions, so that when the plate is bent upon itself the tubular necks of one portion will enter the apertures of the other, and upsetting the outer ends of the necks will press the several neck portions and gripper members vtogether and engage material between them. v

In witness whereof, I have hereunto set my hand this 22nd day of February, A. D. 1930.

CHAIM CHESLER. 

